Throttle-valve indicator



May 15, 1928. 1,669,699

W. H. EDWARDS THROTTLE VALVE INDI CATOR Filed Aug. 9, 1924 W/LL/ANHEN/P) 0 WARDS Patented Pliny i5, 4 H

UNITED "STATES? PAT oer-free;

WILLIAM HENRY EDWARDS, OF 13ml ?IE LZD,4INZEAR- SYDNEYNEWISQUTHLWADEiaAUS- TR-ALIA, ASSIGNOB E ONE?HALF; '10

NEAR SYDNEY, AUSTRALIA.

EDGRR'I, PERGIYAL; HALL, OF BOSEVID'IJIB;

. THROTTLE-VALVE.TNDIGATOR.,

A plication filed August 9, 1924, Serial No. 731,130, and in AustraliaApril 2, 1924.

This inventionrelates to carburettors used upon or with internalcombustion engines and particularly upon automobiles which have meansfor controlling the entrance of fuel mixture from the carburettor totheengine. And the improvement has been specially devised in order toprovide for the driver an indicator of the degree or extent of operationof the carburettor throttle diaphragm so that a better control andregulation of said throttle may be effected by the driver and thusenable him to economize the consumption of fuel.

The improvement consists in the combination with the throttle of asuitable gauge or indicator, such as a dial with graduations markedthereon and an oscillatable pointer mounted so that'it will traverseacross said graduations, or an oscillatable dial to travel in relationto a iixed pointer, and means of conveying the motion of the throttle tosaid pointer or dial so that as the throttle is manipulated asordinarily or in any convenient manner the degree or extent of movementthereof and consequently .of the extent the throttle passage is openwill be displayed upon the indicator visible to the driver and therebyenable him to more efficiently and economically regulate the quantity offuel mixture passing to the engine.

And in order that the invention and a practical application of the sameto the carburettor of an automobile engine will be readily understoodthe same will be described with reference to the-accompanying drawingsin which I Figure 1 is a perspective of the improvement applied to thecarburettor of an automobile, 7

Figure 2 is an enlarged perspective of the carburettor throttle, and

Figure 3 is a perspective of the indicator with part removed.

The indicator, conveniently consists of a casing 4 with flange 5 foraflixture to the dash board 6 of the car, a dial 7 having requisitegraduations thereon, a rotatable shaft 8 axially disposed throughthecasing 4 at right angles to said dial T and having on the front end ahand or pointer 9 to oscillate across the dial and on the rear end anarm or crank 10 havinghinged to its free end a clamping member 11. Saidcrank 10 is connected by means of the clamping member 11 to one end of aBowden wire 12 leading to the carburettor where its other end isconnected to the forward arm 14; of the throttle crank 15 in anysuitable manner say by washers 16 clamped "by a set screw therethroughandinto said arm 14. The Bowden wire casing 13 is clamped and supportedat one end as at 17 to the end of an arm 18 secured to the throttlecasing 19 and at the other end is clamped as at 20 to the end of an arm21 secured to the rear end of the indicator casing 4.

In use as the -throttle 22 is manipulated as ordinarily by movement ofpedal 23 c'on veyed by rod 24 crank 25 shaft 26 crank 27 rod 28 andcrank 15 upon the axle or shaft 29 of the throttle 22 motion of saidshaft 29 and consequently of the throttle 22 is conveyed by arm let ofsaid crank 15 wire 12 crank 10 and shaft 8 to the pointer 9 which ismoved across the dial 7 and so indicates to the driver the extent towhich the throttle is opened,

I claim 1. The combination, with a manuallyoperated throttle valveprovided with a crank, of a pair of indicator elements movablerelatively to one another, one of the said elements being graduated andthe other forming a movable pointer for the graduated element, and meansdirectly responsive to the movement of said throttle valve, said meansembodying a Bowden Wire connecting the movable pointer with the crank ofsaid throttle valve for indicating the position of the same.

2. The combination, with a throttle valve provided with an operatingstem, of a. manually operable controller therefor, and a gage forindicating the degree of opening of the valve and comprising a graduatedelement and a pointing element movable with relation thereto, the saidcontroller and gage being remotely situated with relation to the saidvalve, and separate operating connec tions extending from the valve stemto the controller and to an element of the gage, respectively.

3. The combination, with a throttle valve provided with an operatingstem, of a pair of arms aflixed to the stem, a remotely situated leverfor operating the valve, an operating connection between one of saidarms and said lever, a remotelysituated gage for indicating the degreeof opening of said for indicating the degree of opening of said valve,and another operating connection bevalve, and a flexible, but positive,operating 10 tween the other of said arms and said gage. connection thatextends from said stem to 4. The combination, with a throttle valve saidgage. a 5 provided with an operating stem, of a con- Dated thisfifth dayof July, one thousand troller for said valve situated remotely ninehundred and twenty-four. 1

therefrom, an operating connection extending from said controller tosaid stem, a gage WILLIAM HENRY EDWARDS. Y

